It may have helped to put Indulgence in the title since not a lot of people have that model and you are likely to get random people looking at your question with this title.
I looked it up. 3.7v/6v device w/ adapters?
My GUESS
I think this is a common sweet spot on 3.7v devices:
At 3.7v
Boge 510 2.0 ohm cartomizers or KR808D-1 adapter and Bloogplanet cartomizers
Notes - I use the Boge standard resistance - warm enough for me, and because I share them with slim 510's. Some will prefer more exotic 510 cartos but Boge are still the most popular cartos on 510 threading and the hotter 2.0's are what most seem to prefer on big
batteries since big
batteries can use them. With KR808D-1 I normally use the harder hitting Vapor4Life WOW cartos because I got my nic down to pretty low and need the extra hit but the Bloogplanet ones can give a bigger but smoother drag and work quit nicely)
80PG/20VG juices and 90PG/10VG juices and find ones that drop no flavoring sediment and leave the cotton as white as they found it
At 6v - so high, no idea. There was a thread yesterday about cartos for 6v devices.
http://www.e-cigarette-forum.com/forum/new-members-forum/225566-best-cartomizers-6v.html